Producing low and middle-alloyed cold-heading wires without pickling

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The invention of an in-line galvanic zinc phosphate coating line allows for the production of cold-heading wires without pickling. There are only three production steps: descaling by shotblasting and pre-drawing; annealing in HICON/H2 furnaces; and cleaning, phosphating, soaping and final drawing. This paper will describe the problems that had to be solved to achieve an optimized surface for extreme deformations.

Description

The invention of an in-line galvanic zinc phosphate coating line allows for the production of cold-heading wires without pickling. There are only three production steps: descaling by shotblasting and pre-drawing; annealing in HICON/H2 furnaces; and cleaning, phosphating, soaping and final drawing. This paper will describe the problems that had to be solved to achieve an optimized surface for extreme deformations.

Additional information

Author(s)

Heinz Stockner and Ernst Hojas, Voest-Alpine Austria Draht GmbH, Austria.

Publication/Event/Pages

Paper presented at WAI International Technical Conference, Stratford-Upon-Avon, UK

Year

2001